My wife was adamant that our 7-year-old son learn to play the guitar, and she arranged for him to have lessons with a 25-year-old instructor. One day, my wife was feeling unwell, so I took my son to his lesson instead. As we drove, he started crying, and I reassured him that he didn’t have to go if he didn’t want to. To my surprise, he stopped crying and said, “Mom says I have to, because I have talent like my dad.” It struck me as odd—because I don’t play music.

Curious about the situation, I decided to meet the guitar teacher in person. I went to his house and was taken aback by what I found. There were signs of my wife everywhere: her favorite plant, lucky bamboo, sat in the corner, the furniture was all teal (her favorite color), and he even offered me her preferred drink. On one of the chairs, I noticed a satin scarf that looked identical to one my wife owns. I couldn’t help but wonder if this was all just a coincidence.

That evening, I confronted my wife. At first, she denied everything and called me paranoid, but I couldn’t shake the feeling that something was off. Eventually, she broke down in tears and confessed that she had known the teacher back in college. He had been her boyfriend for a short period, but she insisted that there was no affair between them.

Now, my entire world feels upended, and I can’t stop thinking about whether I should get a DNA test for our son. The idea keeps gnawing at me, and I don’t know how to move forward from here.